12-07-2012, 11:52 AM
DTMF BASED REMOTE INDUSTRIAL LOADS AND AGRICULTURAL PUMP CONTROL
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Abstract:
The main objective of the project is to control the functioning of the load through wireless. One cell phone will send digitized commands to another cell phone which is in auto answering mode at the receiving end. The receiving cell phone codes are fed to the microcontroller which is programmed to recognize those codes for operating any kind of load duly interfaced through relays and relay drivers as per the sent commands from the senders mobile. The receiving cell phone codes are DTMF (dual tone multi frequency) decoded. DTMF Decoder will identify the key frequency and convert that frequency to digital codes which are then fed to the microcontroller.
Description:
Now days, marketing demands are increasing continuously. If you can't satisfy demand then you will knock out of the race. There is no time limit for work. So in modern industry, it needs to give alignment without going on field. Consider one case, that you are field engineer, company will start at 9 o'clock. But you have to turn on boiler at 7 o'clock to start working at 9 o'clock. In this case you have to go at 7 o'clock but by using this project you can start boiler by just giving command from your mobile. Boiler is just example you can turn on or turn off any controlling device.
For giving command, you have to just call on the mobile on set which you have set on field. This mobile is on auto answering mode. This will receive your call. Then particular key is assigned to every controlling action. E.g. - key 1- turn on motor, key 2- turn off motor. Key 3- turn on machine etc. Such that by giving commands from mobile you can control industrial work. It is advantages for all type of industrial work.
AGRICULTURE FIELD MOTOR CONTROL SYSTEM USING DTMF (MOBILE)
Villages are the backbone of our nation. The farmers strive hard day and night to yield very good results in their farm. They know the entire process how to produce a farm, when to provide water to the farms etc. When it is the time to water the farms, they just their current works then and there and rush to the farms to start the pump sets to water the farms.
This project provides an excellent solution to this process. The farmer need not go to the farm to water his field. He can sit at his present place and start the motor on to water his field. No cabling or hardware connections are required to do this. Everything will be carried in a wireless fashion and this system is entirely an automated product. The CELL PHONE does all the tasks required in this project.
A CELL PHONE provides the communication interface. It transports device protocols transparently over the network through a serial interface. A GSM modem is a wireless modem that works with a GSM wireless network. A wireless CELL behaves like a dial-up modem. The main difference between them is that a dial-up modem sends and receives data through a fixed telephone line while a wireless modem sends and receives data through radio waves.
To the motor, GSM MOBILE with the controlling unit will be fixed. If the farmer wishes to water his field, he needs to switch on the motor. Thus, he has give acall to the mobile (fixed unit) from his mobile. Now it is the job of the controller to switch on/ off the motor in accordance with the commands.
Advantages:
1. No need to go on field.
2. Higher relibilty.
3. Cost effective.
4. Fast efficient.
5. Six devices can be controlled by single key command
Applications:
1. Industrial automation.
2. Can also be used for security purpose after modification.
3. in places where control of action has not any time limit.
HARDWARE DESCRIPTION:
A) CELL PHONE
B) AT89C51 MICRO CONTROLLER
C) MT 8870 (DTMF DECODER IC)
D) 7805 three terminal voltage regulator
E) 230/12V step down transformer
F) RELAY DRIVER CIRCUIT
G) 3 LOADS +PUMP MOTOR